Phantom Gold, Silver constant humming

[jonstatt]

i can hear a "buzz" but only when i put my ear over the phantom Gold, the 2 units make the same noise.. nothing to be annoying..

I have two Golds manufactured week 45 and 47 so very recent. They both have a "patterned" buzzing noise if I put my ear very close to them. They are in the bedroom and even at night I cannot hear any hum and the buzz is not audible from even 30-40cm away.